Is cat scratch fever is caused by a from cat?

Cat scratch fever (also known as cat scratch disease) is a bacterial infection caused by the bacterium _Bartonella henselae_. This bacterium can be transmitted from cats to humans through scratches, bites, or other forms of contact.

While cats are the main carriers of Bartonella henselae, not all cats carry the bacterium. Kittens are more likely to be infected with Bartonella henselae than adult cats, and some cats may carry the bacterium without showing any signs of illness.

Symptoms of cat scratch fever typically develop within 1 to 3 weeks after exposure to the bacterium. The most common symptom is a small, raised bump or blister at the site of the scratch or bite. This bump or blister may be accompanied by swelling, redness, and tenderness. In some cases, cat scratch fever can also cause fever, headache, muscle aches, fatigue, and nausea.

Cat scratch fever is usually a mild disease and does not require treatment. However, in some cases, antibiotics may be prescribed to treat the infection. Individuals with weakened immune systems should seek medical attention if they develop symptoms of cat scratch fever.